You said “I think the only interesting point in the author's piece is the point that English text is more difficult to read when it's randomly coloured.” Åkes

You said “I think the only interesting point in the author's piece is the point that English text is more difficult to read when it's randomly coloured.” Åkesson didn't talk about random colors. His sample text isn't randomly colored. It's colored by part-of-speech. Nouns are red, verbs are green, etc. I find the yellow and green parts of his sample text particularly difficult to make out, because of those color choices, not because of the changing of colors from word to word. If Åkesson wants to claim that “it will inevitably decrease the legibility of the text”, he needs to cite a study demonstrating this. As far as I know, he's just speculating. We have a historical reason, at least, for writing prose in just one color: it is much easier to write or mass-print in one color. But now we live in an age of computers, and we could perhaps have the computer syntax-color our prose when we read (and write) it on screen and print it to a color printer. If a reader had time to get used to reading syntax-colored prose (and the color scheme were chosen well), would the reader be able to read faster or understand the material better? This question has to be answered by testing, not speculation.